cue sport vs pocket billiards

cue sport

noun
  • A game played with a cue and balls, such as billiards. 

pocket billiards

noun
  • Any of a family of billiards games played on a specific class of billiards table, having six receptacles called pockets along the rails, in which balls are deposited as the main goal of play. 

  • Synonym of pocket pool 

How often have the words cue sport and pocket billiards occurred in a corpus of books? (source: Google Ngram Viewer )